Spindle sanding machine



Feu i2, 1929.; 1,701,815

W. J. MADDOX SPINDLE SANDING MACHINE Filed Sept. lO, 1926 3 Sheets-Sheetl X X C) la@ g fr n Feb. 12, 1929.

W.-J. MADDOX SPINDLE SANDING MACHINE 5 sheets-sheet 2 Filed Sept. lO,1926 WN xm Feb., l2, 1929.

W. J. MADDOX SPINDLE SANDING MACHINE Filed Sept. l0, i926 3 Sheets-Sheet.Patented Feb. 12, 1929.

WILLIAM J. MADDOX, 0F JAMESTOWN, NEW YURK.

SPINDLE SANDING- MCHNE.

Application led September 10, 1926. Serial No. 134,672.

This invention relates to improvements in wood working or finishingmachines and particularly to a machine commonly known in the industry asa spindle sander.

One object of the invention is to provide a spindle sanding machine ofcomparatively simple construction whereby it may be produced atawminimum cost.

A further' object is' to provide the ma-l chine with an exceedinglysimple arrangement for permitting osclllation of the work supportingtable with respect to the sand- :ng spindle.

Another object contemplated is the provision of a novel and inexpensivearrange- ,ment for adjusting the work supporting table longitudinally ofthe spindle roller in order that work on thev table may be caused toengage different portions of the spool or sanding spindle. In this wathe operator rcan utilize rst one portlon of the spool or spindle andthen another portion, and so on, until the entire surface of the spindleor spool has been utilized and its abrasive surface worn out throughoutits entire length.

With these and other objects in view the invention consists in certainnovel details of construction and combinations and arrangements ofparts, all as will be hereinafter more fully described, and the novelfeatures thereof particularly pointed out in the appended claims. v v

1n the accompanying drawings:

Figure 1 is a side elevationalview of the machine.

Fig. 2 is a sectional View of the opposite side of the machine.

Fig. 3 is a like view taken from the front of the machine.

Fig. 4 is a like view taken from the rear of the machine, these severalviews showing the work supportingtable in dierent positions.

Fig. 5 is a top plan view.

Fig. 6 is a transverse sectional view taken on theline tif-6 of Fig. 2.

Fig. 7 is a detail sectional view taken longitudinally of the sandingspindle or roll.

Fi f. 8 isa plan view of the dust remov pedestal is preferably formed ofa casting of U-shaped cross section. The work supporting table 11, thespindle lsanding roll or spool 12 and the motor 18 for rotating saidspindle are all carried by said pedestal 10, the spindle beingpreferably maintained in an upright or vertical position so positionedwith respect to the work supporting table that an article to be sandedmay be laid upon said table and its edge to be dressed or nishedpressedagainst the spindle. l

In order that the table 11 may be oscillated with respect to the spindle12, said table is preferably carried by a pair of brackets 14 which, inturn, are p-ivotally securedv to the ends of levers pivoted on pedestal10. Preferably there is an upper lever 15 and a lower lever 16 at eachside of the machine, the table brackets 1lih being secured atthe forwardends of said levers. As will be apparent the brackets 14 together withthe table 11 maybe moved up and down by moving the levers 15, 16 ontheir centers at the points at which they are pivoted on the pedestal.In order to maintain the table 11 in its proper working position withrespect to .the spindle 12 one set of the bracket supporting levers,preferably the lower levers 16, are providedY at their rear ends withcounter-weights 17 and to further aid in holding the table in its properposition, but in such manner that it may be so maintained yieldingly,the upper levers 15 have attached thereto at their rear ends springs 18which are also attached to the rear portion of the pedestal 10. 1f anedge of an article is to be sanded and said edge forms a right anglewith the surface of said Varticle the surface of the work supportingtable should lie at right angles to t e sanding surface of s indle 12.On the other hand if the artic e has a beveled edge it is necessary thatthe angular position of the table surface with respect to the s indle bechanged. For this reason the ta le is `pivoted to the bracketslli andhas a slot 19 therein through which extends a clamping screw 20 engagingthe brackets whereby the angular relation of the table and spindle canbe varied. It will be noted that the table is shown in a tilted positionin Figure 1 and in a horizontal position in Figure 2.

4The present invention also contemplates provision for adjusting thespindle loncgitudinally of its center of rotation in or er 29, the

that it may project above the table any desired vdistance whereby anyportion of its abrading surface throughout its length may be utilizedthus permitting the entire surface to be worn out before the spindle isdiscarded. Vith this end in view the spindle 12 is slidably supportedfrom the pedestal 10 and in the preferred construction the motor 13 forrotating said spindle iS mounted on a supporting plate 21 verticallyslidable on the pedestal. Spindle 12 is at- ;ached to the upper end ofthe shaft 13a of ;he motor and by adjusting plate 21 vertically of thepedestal the spindle itself may be projected any desired distance abovethe work supporting surface of table 11. To illustrate this the spindleis shown extending only partially above the table in Fig. 1, while theentire spindle is shown located above the table in Fig. 2.

F or adjusting the motor supporting plate 21 and spindle verticallythere is ivoted on the pedestal 1() a lever 22 pre erably of U-shap'eform, the arms of which are attached by connecting rods 23 to said platewhereby the operator may elevate or4 depress the plate by means of saidlever. To hold the lever' and the motor supporting plate 21 in anydesired adjusting position suitable means may be provided for supportingthe lever 22. 1n the present instance these means are shown asconsisting of a series of recesses 24 in the pedestal 10 and a pin 25which is adapted to be inserted in any one of the recesses so that itmay support one arm of the lever.

For centering the upper end of the spindle there is mounted on thepedestal a post 26 having an adjustable collar 27 and said collar isformed with an ar1fn28 in the end of which there is threaded lacentering screw being a apted to enter a central bore inthe end of thespindle. When it is desire'dto raise or lower the spindle by movementofthe lever 22 collar 27 is loosened so 'that it may slide freely on post26 and after the spindle has been adjusted said collar is againtightened. This arrangement als'o permits the spindle to be easilyplaced in or removed from the machine. As shown in Fig. 7 the end of thespindle which is inserted on the shaft 13 of the motor has a taperedcentral bore 30 corresponding to the similarly tapered end of said shaftand said shaft carries a cross pin 31 which is received in a transverseslot 32 in the end of the spindle whereby rotary motion to the shaftwill be imparted to the spindle. When the spindle or roll is to beinserted in the machine collar 27 and arm 28 may be turned to one side,the spindle or roll placed firmly on the tapered end of the shaft 13 andthen arm 28 turned back until the centering screw 29 is alined with thecentral bore in the uppoint at the lower ond of said screw` per end ofthe'roller spindle. The centering screw is then turned down into thespindle end and the collar 27 clamped on post 26. A further descriptionof the spindle or roll is deemed unnecessary as the same constitutes thesubject matter of a copending application.

1n machines of the present type the sanding spindle or roll runs at sucha high speed that it produces an exceedingly line dust, the particlesbeing as minute as those of flour and where it is desirable to have themachine of the portable type or where it is used in a factory notprovided with a dust collecting system; it is essential that means beprovided for collecting the dust created bythe machine. For this reasonthe pres- -ent machine is provided with a fan 33 1. n a sanding machine,the combination of a frame or pedestal, levers pivoted on said pedestal,a work table carried by said levers, a sanding spindle, means foryieldingly maintaining said table in proper operative association withsaid spindle and means for 'adjustingsaid table to vary the,

angularity of the work-supporting surface thereof with respect to thespindle.

2. In a sanding machine, the combination 'of a frame or pedestal, arotatable spindle, a

work supporting table carried by said pedestal, means for yieldinglymaintaining the table in proper operative association with said spindle,and means for adjusting said table to vary the angularity of the worksupporting surface thereof with respect to the spindle.

3. In a sanding machine, the combination of a frame or pedestal, arotatable spindle, a work supporting table carried by said pedestal,means for yieldingly maintaining the table in proper operativeassociation with said spindle. means for adjusting said table to varythe angularity of the work supporting surface thereof with respect tothe spindle, and means for movin the spindle ongitudinally of its centero rotation.

4. 1n a sanding machine, the combination of a frame or pedestal, a worktable supported on said pedestal, a motor, a sanding spindle mounted onthe shaft of said motor and operatively associated with said work table,means for moving said spindle longitudinally of its center of rotation,and

means for releasably locking said spindle in any of its adjustedpositions.

5. In a sanding machine, the combination 5 of a frame or pedestal, aWork table Supported on said pedestal, a motor, a sanding spindlemounted on the shaft of said motor and operativelylassociated with saidwork.

table, a support for said motor slidably carried by said pedestal, and alever connected to the motor support for sliding the same on the edestaland adjusting the spindle longituinally of its center of rotation.

WILLIAM J. MADDOX.

